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// Generated from camera_proj.rs.tera template. Edit the template, not the generated file.
//! Projection matrix constructors.
//!
//! Expects right-handed Y-up view space input.
//!
//! Each sub-module targets a specific graphics API convention:
//!
//! * [`opengl`] - NDC Z range **[-1, 1]**, Y-up
//! * [`directx`] - NDC Z range **[0, 1]**, Y-up
//! * [`vulkan`] - NDC Z range **[0, 1]**, Y-down
#[doc(alias = "webgl")]
pub mod opengl {
//! OpenGL NDC convention: Z range **[-1, 1]**, Y-up.
//!
//! Expects a right-handed Y-up view space input.
use crate::{DMat4, dcamera::camera_impl};
/// Creates a perspective projection matrix for use with OpenGL.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [-1, 1] and Y-up.
///
/// This is the OpenGL `gluPerspective` equivalent.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` or `far` are less than or equal to zero, or if `near` is equal to
/// `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective(vertical_fov: f64, aspect_ratio: f64, near: f64, far: f64) -> DMat4 {
camera_impl::perspective::<true, false, false>(vertical_fov, aspect_ratio, near, far)
}
/// Creates an orthographic projection matrix for use with OpenGL.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [-1, 1] and Y-up.
///
/// This is the OpenGL `glOrtho` equivalent.
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` is equal to `far` when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn orthographic(
left: f64,
right: f64,
bottom: f64,
top: f64,
near: f64,
far: f64,
) -> DMat4 {
camera_impl::orthographic::<true, false, false>(left, right, bottom, top, near, far)
}
/// Creates a perspective projection matrix from a frustum for use with OpenGL.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [-1, 1] and Y-up.
///
/// This is the OpenGL `glFrustum` equivalent.
/// See <https://registry.khronos.org/OpenGL-Refpages/gl2.1/xhtml/glFrustum.xml>
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` or `far` are less than or equal to zero, or if `near` is
/// equal to `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn frustum(left: f64, right: f64, bottom: f64, top: f64, near: f64, far: f64) -> DMat4 {
camera_impl::frustum::<true, false, false>(left, right, bottom, top, near, far)
}
}
pub mod vulkan {
//! Vulkan NDC convention: Z range **[0, 1]**, Y-down.
//!
//! Expects a right-handed Y-up view space input.
//!
//! Includes standard, infinite-far, and reverse-depth variants.
use crate::{DMat4, dcamera::camera_impl};
/// Creates a perspective projection matrix for use with Vulkan.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-down.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` or `far` are less than or equal to zero, or if `near` is equal to
/// `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective(vertical_fov: f64, aspect_ratio: f64, near: f64, far: f64) -> DMat4 {
camera_impl::perspective::<true, true, true>(vertical_fov, aspect_ratio, near, far)
}
/// Creates an infinite perspective projection matrix for use with Vulkan.
///
/// Like `perspective`, but with an infinite value for `far`. Points at distance
/// `near` map to depth `0`; as distance approaches infinity, depth approaches `1`.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-down.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` is less than or equal to zero when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective_infinite(vertical_fov: f64, aspect_ratio: f64, near: f64) -> DMat4 {
camera_impl::perspective_infinite::<true, true, true>(vertical_fov, aspect_ratio, near)
}
/// Creates an infinite perspective projection matrix with reversed depth for use with
/// Vulkan.
///
/// Maps `near` to depth `1` and infinity to depth `0`.
///
/// Reversed Z improves depth precision when used with a floating-point depth buffer.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-down.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` is less than or equal to zero when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective_infinite_reverse(vertical_fov: f64, aspect_ratio: f64, near: f64) -> DMat4 {
camera_impl::perspective_infinite_reverse::<true, true>(vertical_fov, aspect_ratio, near)
}
/// Creates an orthographic projection matrix for use with Vulkan.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-down.
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` is equal to `far` when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn orthographic(
left: f64,
right: f64,
bottom: f64,
top: f64,
near: f64,
far: f64,
) -> DMat4 {
camera_impl::orthographic::<true, true, true>(left, right, bottom, top, near, far)
}
/// Creates a perspective projection from a frustum for use with Vulkan.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-down.
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` or `far` are less than or equal to zero, or if `near` is
/// equal to `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn frustum(left: f64, right: f64, bottom: f64, top: f64, near: f64, far: f64) -> DMat4 {
camera_impl::frustum::<true, true, true>(left, right, bottom, top, near, far)
}
}
#[doc(alias = "webgpu")]
pub mod directx {
//! DirectX and WebGPU NDC convention: Z range **[0, 1]**, Y-up.
//!
//! Expects a right-handed Y-up view space input.
//!
//! Includes standard, infinite-far, and reverse-depth variants.
use crate::{DMat4, dcamera::camera_impl};
/// Creates a perspective projection matrix for use with DirectX and WebGPU.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-up.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` or `far` are less than or equal to zero, or if `near` is equal to
/// `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective(vertical_fov: f64, aspect_ratio: f64, near: f64, far: f64) -> DMat4 {
camera_impl::perspective::<true, true, false>(vertical_fov, aspect_ratio, near, far)
}
/// Creates an infinite perspective projection matrix for use with DirectX and WebGPU.
///
/// Like `perspective`, but with an infinite value for `far`. Points at distance
/// `near` map to depth `0`; as distance approaches infinity, depth approaches `1`.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-up.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` is less than or equal to zero when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective_infinite(vertical_fov: f64, aspect_ratio: f64, near: f64) -> DMat4 {
camera_impl::perspective_infinite::<true, true, false>(vertical_fov, aspect_ratio, near)
}
/// Creates an infinite perspective projection matrix with reversed depth for use with
/// DirectX and WebGPU.
///
/// Maps `near` to depth `1` and infinity to depth `0`.
///
/// Reversed Z improves depth precision when used with a floating-point depth buffer.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-up.
///
/// # Panics
///
/// Will panic if `vertical_fov` is not in the range `(0, π)`, if `aspect_ratio` is
/// zero, or if `near` is less than or equal to zero when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn perspective_infinite_reverse(vertical_fov: f64, aspect_ratio: f64, near: f64) -> DMat4 {
camera_impl::perspective_infinite_reverse::<true, false>(vertical_fov, aspect_ratio, near)
}
/// Creates an orthographic projection matrix for use with DirectX and WebGPU.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-up.
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` is equal to `far` when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn orthographic(
left: f64,
right: f64,
bottom: f64,
top: f64,
near: f64,
far: f64,
) -> DMat4 {
camera_impl::orthographic::<true, true, false>(left, right, bottom, top, near, far)
}
/// Creates a perspective projection from a frustum for use with DirectX and WebGPU.
///
/// Expects a right-handed Y-up view space input.
/// Outputs NDC with Z in [0, 1] and Y-up.
///
/// # Panics
///
/// Will panic if `left` is equal to `right`, if `bottom` is equal to
/// `top`, or if `near` or `far` are less than or equal to zero, or if `near` is
/// equal to `far`, when `glam_assert` is enabled.
#[inline]
#[must_use]
#[cfg_attr(any(debug_assertions, feature = "glam-assert"), track_caller)]
pub fn frustum(left: f64, right: f64, bottom: f64, top: f64, near: f64, far: f64) -> DMat4 {
camera_impl::frustum::<true, true, false>(left, right, bottom, top, near, far)
}
}